| 48 | Pickering College | Newmarket | Site based only | Conference of Independent Schools of Ontario | Visit |
| 585 | Endless PossABILITIES | Newmarket | Site based only | No Association Membership | Visit |
| 701 | Innova Academy | Newmarket | Site based only | Other | Visit |
| 707 | International Academy | Newmarket | Online Only | No Association Membership | — |
| 750 | Kindred Spirits Day School | Newmarket | Site based only | No Association Membership | Visit |
| 758 | La Maison Montessori House | Newmarket | Site based only | No Association Membership | Visit |
| 782 | Link On Learning | Newmarket | Online Only | No Association Membership | Visit |
| 884 | New Beginnings Christian Learning Academy | Newmarket | Site based only | Other | Visit |
| 891 | Newmarket & District Christian Academy | Newmarket | Site based only | No Association Membership | Visit |
| 892 | Newmarket Montessori Christian Academy | Newmarket | Site based only | No Association Membership | Visit |
| 1001 | Regalo Montessori | Newmarket | Site based only | No Association Membership | Visit |